each_pair()
  public
  
    
    
Calls block once for each key in hsh, passing the key-value pair
as parameters.
If no block is given, an enumerator is returned instead.
h = { "a" => 100, "b" => 200 }
h.each {|key, value| puts "#{key} is #{value}" }
produces:
a is 100
b is 200
   
  
    Show source    
    
      static VALUE
rb_hash_each_pair(VALUE hash)
{
    RETURN_ENUMERATOR(hash, 0, 0);
    rb_hash_foreach(hash, each_pair_i, 0);
    return hash;
}